CN110488792A - A kind of oscillation recognition methods of thermoelectricity production process and device - Google Patents
A kind of oscillation recognition methods of thermoelectricity production process and device Download PDFInfo
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- CN110488792A CN110488792A CN201910573777.XA CN201910573777A CN110488792A CN 110488792 A CN110488792 A CN 110488792A CN 201910573777 A CN201910573777 A CN 201910573777A CN 110488792 A CN110488792 A CN 110488792A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
Abstract
The present invention provides a kind of oscillation recognition methods of thermoelectricity production process and devices, are judged to quantitative by obtaining in thermoelectricity production process；It is judged to quantitative according to described, obtains deviation；According to deviation, to being judged to quantitatively be filtered；According to the deviation, zero passage rate determination condition is obtained；Obtain drift energy decision condition；Obtain cycle of oscillation decision condition；According to zero passage rate determination condition, drift energy decision condition and cycle of oscillation decision condition, judge whether thermoelectricity production process is system oscillation.The detection function for solving control system is not perfect, there is technical issues that find the oscillatory condition of system appearance in time and influence, reach and obtains parameter information in production process in real time, the stability of timely decision-making system, the system oscillation of appearance is identified in real time, is detected, evaluation, the detection function of control system are improved, to overcome system to occur vibrating to cause the accident the technical effect of unnecessary loss occur.
Description
Technical field
The present invention relates to a kind of oscillation of automatic control system diagnostic techniques field more particularly to thermoelectricity production process knowledges
Other method and apparatus.
Background technique
In power generation production process, automatic control system is played a crucial role.Power generation (the fire of one modernization
Electricity) at least there is the automatic control processes for crossing hundred sets for enterprise.The superiority and inferiority of these automatic control system Control platforms will directly or
Indirectly influence the safety and economy of power plant operation.Traditional control loop evaluation mainly relies on some controls
The transitional index in circuit processed, such as overshoot, decaying and stable time.Since the parameter for needing to monitor is numerous, many automatic
Due to usually controlling more stable so few people go to pay close attention to stable system, when the system vibrates in the parameter of control
When be easy to produce production accident and cause the loss that need not also want.
But present invention applicant has found that the prior art at least has the following technical problems:
The detection function of control system is not perfect in the prior art, there is the oscillatory condition that cannot find that system occurs in time
And the technical issues of influencing system stability.
Summary of the invention
The embodiment of the invention provides a kind of oscillation recognition methods of thermoelectricity production process and devices, solve the prior art
The detection function of middle control system is not perfect, there is the oscillatory condition that cannot find system appearance in time and influences system stability
The technical issues of.
In view of the above problems, the embodiment of the present application is proposed in order to provide a kind of oscillation recognition methods of thermoelectricity production process
And device.
In a first aspect, the present invention provides a kind of oscillation recognition methods of thermoelectricity production process, which comprises obtain
Being judged in thermoelectricity production process is quantitative；It is judged to quantitative according to described, obtains deviation；According to the deviation, to the quilt
Decision content is filtered；According to the deviation, zero passage rate determination condition is obtained；Obtain drift energy decision condition；It obtains
Cycle of oscillation decision condition；According to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation
Decision condition judges whether the thermoelectricity production process is system oscillation.
Preferably, described to be judged to quantitative according to, obtain deviation, comprising: obtain process data；According to the process
Data obtain rolling average MA；The process data and rolling average MA are sought into deviation, obtain the deviation.
Preferably, described to be judged to quantitative according to, obtain deviation, comprising: obtain setting value；Obtain regulated variable；Root
According to the setting value and the regulated variable, the deviation is obtained.
Preferably, described according to the deviation, obtain zero passage rate determination condition, comprising: store the deviation
In First ray；Obtain the first predetermined value；Zero passage rate determination condition is obtained, the zero passage rate determination condition is when described
When deviation zero crossing, | MA (En, R) | > ratio.The wherein rolling average algorithm that MA refers to, En refer to that biased sequence, R refer to
MA parameter.
Preferably, the acquisition drift energy decision condition, comprising: according to the deviation, obtain drift energy；By institute
Drift energy is stated to be stored in the first array；Obtain the energy ratio of continuous two drift energies in first array；By continuous two
Whether a energy ratio is greater than the 0.9 of the former energy ratio, as drift energy decision condition.
Preferably, the acquisition cycle of oscillation decision condition, comprising: obtain the time series of drift energy；When will be described
Between sequence be stored in the second array；Obtain the period ratio of continuous two time serieses in second array；By continuous two periods
Than whether being greater than the 0.7 of the former period ratio and being less than the 1.3 of the former period ratio, as cycle of oscillation decision condition.
Preferably, described according to the zero passage rate determination condition, the drift energy decision condition and oscillation week
Phase decision condition judges whether the thermoelectricity production process is system oscillation, comprising: if the thermoelectricity production process meets institute
State zero passage rate determination condition, at least two conditions in the drift energy decision condition and the cycle of oscillation decision condition,
Determine that the thermoelectricity production process is system oscillation.
Second aspect, the present invention provides a kind of oscillation identification device of thermoelectricity production process, described device includes:
First obtains unit, the first obtains unit, which is used to obtain in thermoelectricity production process, is judged to quantitative；
Second obtaining unit, second obtaining unit obtain deviation for being judged to quantitative according to；
First filter unit, first filter unit are used to be judged to quantitatively filter to described according to the deviation
Wave
Third obtaining unit, the third obtaining unit are used to obtain zero passage rate determination condition according to the deviation；
4th obtaining unit, the 4th obtaining unit is for obtaining drift energy decision condition；
5th obtaining unit, the 5th obtaining unit is for obtaining cycle of oscillation decision condition；
First judging unit, first judging unit are used for according to the zero passage rate determination condition, the deviation energy
Decision condition and the cycle of oscillation decision condition are measured, judges whether the thermoelectricity production process is system oscillation.
Preferably, described device further include:
6th obtaining unit, the 6th obtaining unit is for obtaining process data；
7th obtaining unit, the 7th obtaining unit are used to obtain rolling average MA according to the process data；
8th obtaining unit, the 8th obtaining unit are used to the process data and rolling average MA seeking deviation, obtain
Obtain the deviation.
Preferably, described device further include:
9th obtaining unit, the 9th obtaining unit is for obtaining setting value；
Tenth obtaining unit, the tenth obtaining unit is for obtaining regulated variable；
11st obtaining unit, the 11st obtaining unit are used to be obtained according to the setting value and the regulated variable
The deviation.
Preferably, described device further include:
First storage unit, first storage unit are used to the deviation being stored in First ray；
12nd obtaining unit, the 12nd obtaining unit is for obtaining the first predetermined value；
13rd obtaining unit, the 13rd obtaining unit are described to cross zero-speed for obtaining zero passage rate determination condition
Rate decision condition be when the deviation zero crossing, | MA (En, R) | > ratio.
Preferably, described device further include:
14th obtaining unit, the 14th obtaining unit are used to obtain drift energy according to the deviation；
First deposit unit, the first deposit unit are used to for the drift energy being stored in the first array；
15th obtaining unit, the 15th obtaining unit is for obtaining continuous two deviation energy in first array
The energy ratio of amount；
First execution unit, first execution unit are used to whether for continuous two energy ratios to be greater than the former energy ratio
0.9, as drift energy decision condition.
Preferably, described device further include:
16th obtaining unit, the 16th obtaining unit are used to obtain the time series of drift energy；
Second deposit unit, the second deposit unit are used to the time series being stored in the second array；
17th obtaining unit, the 17th obtaining unit is for obtaining continuous two time sequences in second array
The period ratio of column；
Second execution unit, second execution unit are used for continuous two periods than whether being greater than the former period ratio
0.7 and it is less than the 1.3 of the former period ratio, as cycle of oscillation decision condition.
Preferably, described device further include:
Second judgment unit, if the second judgment unit meets the zero passage rate for the thermoelectricity production process
At least two conditions in decision condition, the drift energy decision condition and the cycle of oscillation decision condition, determine the fire
Electric production process is system oscillation.
The third aspect, the present invention provides a kind of oscillation identification devices of thermoelectricity production process, including memory, processor
And storage is on a memory and the computer program that can run on a processor, when the processor executes described program realization with
Lower step: it obtains in thermoelectricity production process and is judged to quantitative；It is judged to quantitative according to described, obtains deviation；According to the deviation
Value, is judged to quantitatively be filtered to described；According to the deviation, zero passage rate determination condition is obtained；Drift energy is obtained to sentence
Fixed condition；Obtain cycle of oscillation decision condition；According to the zero passage rate determination condition, the drift energy decision condition and institute
Cycle of oscillation decision condition is stated, judges whether the thermoelectricity production process is system oscillation.
Fourth aspect, the present invention provides a kind of computer readable storage mediums, are stored thereon with computer program, the journey
It performs the steps of to obtain in thermoelectricity production process when sequence is executed by processor and is judged to quantitative；It is judged to quantitative according to described, obtains
Obtain deviation；According to the deviation, it is judged to quantitatively be filtered to described；According to the deviation, obtains zero passage rate and sentence
Fixed condition；Obtain drift energy decision condition；Obtain cycle of oscillation decision condition；According to the zero passage rate determination condition, institute
Drift energy decision condition and the cycle of oscillation decision condition are stated, judges whether the thermoelectricity production process is system oscillation.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
A kind of oscillation recognition methods of thermoelectricity production process provided in an embodiment of the present invention and device, it is raw by obtaining thermoelectricity
Being judged to during production is quantitative；It is judged to quantitative according to described, obtains deviation；According to the deviation, it is judged to quantitative to described
It is filtered；According to the deviation, zero passage rate determination condition is obtained；Obtain drift energy decision condition；Obtain oscillation week
Phase decision condition；Item is determined according to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation
Part judges whether the thermoelectricity production process is system oscillation.Parameter information in real-time acquisition production process is reached, has sentenced in time
The stability for determining system identifies the system oscillation of appearance in real time, is detected, and evaluation, the detection of control system are improved
Function, to overcome system to occur vibrating to cause the accident the technical effect of unnecessary loss occur.And then solves the prior art
The detection function of middle control system is not perfect, there is the oscillatory condition that cannot find system appearance in time and influences system stability
The technical issues of.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the oscillation recognition methods of thermoelectricity production process in the embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the oscillation identification device of thermoelectricity production process in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the oscillation identification device of another thermoelectricity production process in the embodiment of the present invention.
Description of symbols: first obtains unit 11, the second obtaining unit 12, the first filter unit 13, third obtain single
Member 14, the 4th obtaining unit 15, the 5th obtaining unit 16, the first judging unit 17, bus 300, receiver 301, processor
302, transmitter 303, memory 304, bus interface 306.
Specific embodiment
The embodiment of the invention provides a kind of oscillation recognition methods of thermoelectricity production process and devices, for solving existing skill
The detection function of control system is not perfect in art, there is the oscillatory condition that cannot find system appearance in time and influences system and stablize
The technical issues of property.
Technical solution general thought provided by the invention is as follows:
It obtains in thermoelectricity production process and is judged to quantitative；It is judged to quantitative according to described, obtains deviation；According to the deviation
Value, is judged to quantitatively be filtered to described；According to the deviation, zero passage rate determination condition is obtained；Drift energy is obtained to sentence
Fixed condition；Obtain cycle of oscillation decision condition；According to the zero passage rate determination condition, the drift energy decision condition and institute
Cycle of oscillation decision condition is stated, judges whether the thermoelectricity production process is system oscillation.Real-time acquisition production process is reached
Middle parameter information, the stability of timely decision-making system identify the system oscillation of appearance in real time, are detected, and control is improved
The evaluation of system processed, detection function, to overcome system to occur vibrating to cause the accident the technical effect of unnecessary loss occur.
Technical solution of the present invention is described in detail below by attached drawing and specific embodiment, it should be understood that the application
Specific features in embodiment and embodiment are the detailed description to technical scheme, rather than to present techniques
The restriction of scheme, in the absence of conflict, the technical characteristic in the embodiment of the present application and embodiment can be combined with each other.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Embodiment one
Fig. 1 is a kind of flow diagram of the oscillation recognition methods of thermoelectricity production process in the embodiment of the present invention.Such as Fig. 1 institute
Show, the embodiment of the invention provides a kind of oscillation recognition methods of thermoelectricity production process, which comprises
Step 110: obtaining in thermoelectricity production process and be judged to quantitative；
Step 120: being judged to quantitative according to described, obtain deviation；
Step 130: according to the deviation, being judged to quantitatively be filtered to described；
Step 140: according to the deviation, obtaining zero passage rate determination condition；
Step 150: obtaining drift energy decision condition；
Step 160: obtaining cycle of oscillation decision condition；
Step 170: being sentenced according to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation
Fixed condition judges whether the thermoelectricity production process is system oscillation.
It is judged to quantitative in thermoelectricity production process specifically, acquiring, i.e. setting value, process values, usually there are two types of adopt
Set method, one is determine whether a certain manufacturing parameter is stable, only acquires the process data of the parameter, another acquisition method is
To judge to adjust, whether control process is stable, and the data processing of this acquisition method is that setting value and regulated variable are sought deviation.
Then corresponding deviation is obtained according to the collected fixed value calculation that is judged to, then according to the deviation being calculated, to being judged to
Inertia is quantitatively sought, is filtered, ((Δ e), t1), wherein Δ e is deviation to Δ e2=lag, and the time value of t1 will guarantee
Fall (the shake item of Δ e) guarantees enough filter factors, wherein to be judged to it is quantitative carry out deviation calculating when should be noted that and take
Value guarantees enough filter factors, and to guarantee to filter away because of error caused by measuring shake, filtering is will be specific in signal
The operation that audio range frequency filters out is the important measures for inhibiting and preventing interference.According to the size of deviation, obtain corresponding
Zero passage rate determination condition, the rate determination condition in zero crossing.Finally according to analysis obtain zero passage rate determination condition,
Drift energy decision condition and cycle of oscillation decision condition, analyze and determine the parameter in thermoelectricity production process, to obtain
The case where thermoelectricity production process whether there is system oscillation is obtained, reaches and obtains parameter information in production process in real time, in time judgement
The stability of system identifies the system oscillation of appearance in real time, is detected, and evaluation, the detection function of control system are improved
Can, to overcome system to occur vibrating to cause the accident unnecessary loss occur.And then solves control system in the prior art
Detection function is not perfect, there is technical issues that find the oscillatory condition of system appearance in time and influence.
Further, described to be judged to quantitative according to, obtain deviation, comprising: obtain process data；According to the mistake
Number of passes evidence obtains rolling average MA；The process data and rolling average MA are sought into deviation, obtain the deviation.
Specifically, acquisition method is divided into two kinds, and whether one kind is steady to determine manufacturing parameter according to quantitative difference is judged to
It is fixed, one is judge adjust whether control process is stable, when judging whether a certain parameter in producing is stable for the first,
The process data of the measured parameter of acquisition in process of production, can in order to guarantee accuracy that data calculate and assessment result
Sufficient amount of process data need to be acquired, for there are variable cycles when acquiring the process data of measured parameter by property
Measured parameter, the number of samples of at least twice variable cycle is acquired according to the variable cycle of parameter, for no variable cycle
Measured parameter, acquisition be no less than 100 sampling periods numerical value, by collected process data carry out rolling average sampling
Data calculate, and obtain rolling average MA, ask deviation to obtain deviation in rolling average MA process data, to sample 100 numbers
For, ask deviation to obtain (Δ e), to (Δ e) asks inertia, Δ e2=lag in MA (100) collected process data PV1
((the shake item of Δ e) is removed in (Δ e), t1), the guarantee of t1 value.To obtain the deviation of manufacturing parameter in production process in time,
For accurately determining its stability.
Further, described to be judged to quantitative according to, obtain deviation, comprising: obtain setting value；Obtain regulated variable；
According to the setting value and the regulated variable, the deviation is obtained.
Specifically, for determining whether adjusting control process is stable, collects and is judged in quantification of acquisition production process
Setting value, the regulated variable of data processing.Regulated variable, which refers to, is required the object for keeping given value or changing according to certain rules in tune object
Reason amount, the usually primary variables of decision objects working condition.Deviation is calculated according to collected setting value and regulated variable
Δ e, Δ e=SV-PV, wherein SV is setting value, and PV is regulated variable, obtained deviation is filtered, Δ e2=lag
((Δ e), t1), the value of t1 will guarantee enough filter factors, can filter away because of error caused by measurement is shaken.
Further, described according to the deviation, obtain zero passage rate determination condition, comprising: deposit the deviation
It is stored in First ray；Obtain the first predetermined value；Zero passage rate determination condition is obtained, the zero passage rate determination condition is works as
When stating deviation zero crossing, | MA (En, R) | > ratio.
Specifically, being stored in the deviation obtained is calculated in First ray, EN(Δ e)/dt, wherein E is the to=d
One sequence, presetting ratio is a certain number ratios, when (when Δ e) zero crossing | MA (En, R) | > ratio then can be used as and sentence
Determine system oscillation condition set up, when in Δ e zero crossing be used as trigger signal, triggering later step, for recording oscillation energy
Amount.
Further, the acquisition drift energy decision condition, comprising: according to the deviation, obtain drift energy；It will
The drift energy is stored in the first array；Obtain the energy ratio of continuous two drift energies in first array；It will be continuous
Whether two energy ratios are greater than the 0.9 of the former energy ratio, as drift energy decision condition.
Specifically, the analysis of drift energy, the process of deviation is asked pair within the time of deviation zero crossing
The integral of time, calculation formula areWherein ENG is drift energy, and Ts is from (Δ e) passes through zero
The time of point, Te is current time.ENG is stored in array ENGDATA, which is 5, be may be expressed as:
ENGDATA=[... .., ENGn-4, ENGn-3, ENGn-2, ENGn-1, ENGn], if subsequent continue to record
ENG1 is then rejected sequence by condition, will be one mobile before all subscripts, and the condition for determining that drift energy is set up is continuous two
Drift energy is greater than the former 90%, can be expressed as DIV1=ENG (N)/ENG (N-1), DIV2=ENG (N-1)/ENG (N-
2), (DIV2 > 0.9 DIV1 > 0.9AND) CT=, wherein DIV is energy ratio, and CT is decision condition.
Further, the acquisition cycle of oscillation decision condition, comprising: obtain the time series of drift energy；It will be described
Time series is stored in the second array；Obtain the period ratio of continuous two time serieses in second array；By continuous two week
Phase than whether being greater than the 0.7 of the former period ratio and being less than the 1.3 of the former period ratio, as cycle of oscillation decision condition.
Specifically, the judgement of cycle of oscillation is by drift energy calculation formulaIn Ts
Start to record simultaneously with the numerical value of each zero crossing of Te, and seeks TN=Te-Ts, wherein TNIt is expressed as corresponding drift energy
Time series in calculation formula obtains the period ratio of continuous two time serieses in second array, by continuous two week
Phase than whether being greater than the 0.7 of the former period ratio and being less than the 1.3 of the former period ratio, as cycle of oscillation decision condition, works as condition
The numerical value is reset always when invalid.TNDATA=[... TN-2,TN-1,TN], TDIV1=T (N)/T (N-1), TDIV2=T (N-
1)/T (N-2), wherein TDIV is period ratio, CTT=((TDIV1>0.7AND TDIV1<1.3) AND (TDIV1>0.7AND
TDIV1 < 1.3)), CTT is period decision condition.
Further, described according to the zero passage rate determination condition, the drift energy decision condition and the oscillation
Period decision condition judges whether the thermoelectricity production process is system oscillation, comprising: if the thermoelectricity production process meets
At least two in the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation decision condition
Part determines that the thermoelectricity production process is system oscillation.
Specifically, being carried out according to zero passage rate determination condition, drift energy decision condition and cycle of oscillation decision condition
Determine, when thermoelectricity production process meets the zero passage rate determination condition, the drift energy decision condition and oscillation week
In phase decision condition when at least two conditions, determine that thermoelectricity production process is system oscillation, control system can be improved as far as possible
The monitoring efficiency of system oscillation, improves the accuracy rate diagnosed about system mode.By obtaining parameter information in production process in real time,
The stability of timely decision-making system, identifies the system oscillation of appearance in real time, is detected, improve commenting for control system
Valence, detection function, to overcome system to occur vibrating to cause the accident the technical effect of unnecessary loss occur.It is existing to solve
There is the detection function of control system in technology not perfect, there is the oscillatory condition that cannot find system appearance in time and influence system
The technical issues of stability.
Embodiment two
Based on inventive concept same as the oscillation recognition methods of thermoelectricity production process a kind of in previous embodiment, the present invention
A kind of oscillation identification device of thermoelectricity production process is also provided, as shown in Fig. 2, described device includes:
First obtains unit 11, the first obtains unit 11, which is used to obtain in thermoelectricity production process, is judged to quantitative；
Second obtaining unit 12, second obtaining unit 12 obtain deviation for being judged to quantitative according to；
First filter unit 13, first filter unit 13 are used for according to the deviation, to it is described be judged to it is quantitative into
Row filtering
Third obtaining unit 14, the third obtaining unit 14 are used to obtain zero passage rate determination according to the deviation
Condition；
4th obtaining unit 15, the 4th obtaining unit 15 is for obtaining drift energy decision condition；
5th obtaining unit 16, the 5th obtaining unit 16 is for obtaining cycle of oscillation decision condition；
First judging unit 17, first judging unit 17 be used for according to the zero passage rate determination condition, it is described partially
Poor energy decision condition and the cycle of oscillation decision condition judge whether the thermoelectricity production process is system oscillation.
Further, described device further include:
6th obtaining unit, the 6th obtaining unit is for obtaining process data；
7th obtaining unit, the 7th obtaining unit are used to obtain rolling average MA according to the process data；
8th obtaining unit, the 8th obtaining unit are used to the process data and rolling average MA seeking deviation, obtain
Obtain the deviation.
Further, described device further include:
9th obtaining unit, the 9th obtaining unit is for obtaining setting value；
Tenth obtaining unit, the tenth obtaining unit is for obtaining regulated variable；
11st obtaining unit, the 11st obtaining unit are used to be obtained according to the setting value and the regulated variable
The deviation.
Further, described device further include:
First storage unit, first storage unit are used to the deviation being stored in First ray；
12nd obtaining unit, the 12nd obtaining unit is for obtaining the first predetermined value；
13rd obtaining unit, the 13rd obtaining unit are described to cross zero-speed for obtaining zero passage rate determination condition
Rate decision condition be when the deviation zero crossing, | MA (En, R) | > ratio.
Further, described device further include:
14th obtaining unit, the 14th obtaining unit are used to obtain drift energy according to the deviation；
First deposit unit, the first deposit unit are used to for the drift energy being stored in the first array；
15th obtaining unit, the 15th obtaining unit is for obtaining continuous two deviation energy in first array
The energy ratio of amount；
First execution unit, first execution unit are used to whether for continuous two energy ratios to be greater than the former energy ratio
0.9, as drift energy decision condition.
Further, described device further include:
16th obtaining unit, the 16th obtaining unit are used to obtain the time series of drift energy；
Second deposit unit, the second deposit unit are used to the time series being stored in the second array；
17th obtaining unit, the 17th obtaining unit is for obtaining continuous two time sequences in second array
The period ratio of column；
Second execution unit, second execution unit are used for continuous two periods than whether being greater than the former period ratio
0.7 and it is less than the 1.3 of the former period ratio, as cycle of oscillation decision condition.
Further, described device further include:
Second judgment unit, if the second judgment unit meets the zero passage rate for the thermoelectricity production process
At least two conditions in decision condition, the drift energy decision condition and the cycle of oscillation decision condition, determine the fire
Electric production process is system oscillation.
The various change mode of the oscillation recognition methods of one of 1 embodiment one of earlier figures thermoelectricity production process and specific
Example is equally applicable to a kind of oscillation identification device of thermoelectricity production process of the present embodiment, is produced by aforementioned to a kind of thermoelectricity
The detailed description of the oscillation recognition methods of process, those skilled in the art are clear that in the present embodiment that a kind of thermoelectricity is raw
The implementation method of the oscillation identification device of production process, so this will not be detailed here in order to illustrate the succinct of book.
Embodiment three
Based on inventive concept same as the oscillation recognition methods of thermoelectricity production process a kind of in previous embodiment, the present invention
A kind of oscillation identification device of thermoelectricity production process is also provided, computer program is stored thereon with, which is executed by processor
A kind of the step of either the Shi Shixian oscillation recognition methods of thermoelectricity production process described previously method.
Wherein, in Fig. 3, bus architecture (is represented) with bus 300, and bus 300 may include any number of interconnection
Bus and bridge, bus 300 will include the one or more processors represented by processor 302 and what memory 304 represented deposits
The various circuits of reservoir link together.Bus 300 can also will peripheral equipment, voltage-stablizer and management circuit etc. it
Various other circuits of class link together, and these are all it is known in the art, therefore, no longer carry out further to it herein
Description.Bus interface 306 provides interface between bus 300 and receiver 301 and transmitter 303.Receiver 301 and transmission
Device 303 can be the same element, i.e. transceiver, provide the unit for communicating over a transmission medium with various other devices.
Processor 302 is responsible for management bus 300 and common processing, and memory 304 can be used for storage processor
302 when executing operation used data.
Example IV
The same inventive concept of method for distinguishing, this hair are known based on the oscillation with thermoelectricity production process a kind of in previous embodiment
It is bright that a kind of computer readable storage medium is also provided, it is stored thereon with computer program, realization when which is executed by processor
Following steps: it obtains in thermoelectricity production process and is judged to quantitative；It is judged to quantitative according to described, obtains deviation；According to described inclined
Difference is judged to quantitatively be filtered to described；According to the deviation, zero passage rate determination condition is obtained；Obtain drift energy
Decision condition；Obtain cycle of oscillation decision condition；According to the zero passage rate determination condition, the drift energy decision condition and
The cycle of oscillation decision condition judges whether the thermoelectricity production process is system oscillation.
In the specific implementation process, when which is executed by processor, method either can also be realized in embodiment one
Step.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit:
A kind of oscillation recognition methods of thermoelectricity production process provided in an embodiment of the present invention and device, it is raw by obtaining thermoelectricity
Being judged to during production is quantitative；It is judged to quantitative according to described, obtains deviation；According to the deviation, it is judged to quantitative to described
It is filtered；According to the deviation, zero passage rate determination condition is obtained；Obtain drift energy decision condition；Obtain oscillation week
Phase decision condition；Item is determined according to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation
Part judges whether the thermoelectricity production process is system oscillation.Parameter information in real-time acquisition production process is reached, has sentenced in time
The stability for determining system identifies the system oscillation of appearance in real time, is detected, and evaluation, the detection of control system are improved
Function, to overcome system to occur vibrating to cause the accident the technical effect of unnecessary loss occur.And then solves the prior art
The detection function of middle control system is not perfect, there is the oscillatory condition that cannot find system appearance in time and influences system stability
The technical issues of.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of oscillation recognition methods of thermoelectricity production process, which is characterized in that the described method includes:
It obtains in thermoelectricity production process and is judged to quantitative；
It is judged to quantitative according to described, obtains deviation；
According to the deviation, it is judged to quantitatively be filtered to described；
According to the deviation, zero passage rate determination condition is obtained；
Obtain drift energy decision condition；
Obtain cycle of oscillation decision condition；
According to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation decision condition, judgement
Whether the thermoelectricity production process is system oscillation.
2. the method as described in claim 1, which is characterized in that it is described to be judged to quantitative according to, obtain deviation, comprising:
Obtain process data；
According to the process data, rolling average MA is obtained；
The process data and rolling average MA are sought into deviation, obtain the deviation.
3. the method as described in claim 1, which is characterized in that it is described to be judged to quantitative according to, obtain deviation, comprising:
Obtain setting value；
Obtain regulated variable；
According to the setting value and the regulated variable, the deviation is obtained.
4. method according to claim 2, which is characterized in that it is described according to the deviation, obtain zero passage rate determination item
Part, comprising:
The deviation is stored in First ray；
Obtain the first predetermined value；
Obtain zero passage rate determination condition, the zero passage rate determination condition be when the deviation zero crossing, | MA (En, R)
|>ratio。
5. the method as described in claim 1, which is characterized in that the acquisition drift energy decision condition, comprising:
According to the deviation, drift energy is obtained；
The drift energy is stored in the first array；
Obtain the energy ratio of continuous two drift energies in first array；
Whether continuous two energy ratios are greater than the 0.9 of the former energy ratio, as drift energy decision condition.
6. the method as described in claim 1, which is characterized in that the acquisition cycle of oscillation decision condition, comprising:
Obtain the time series of drift energy；
The time series is stored in the second array；
Obtain the period ratio of continuous two time serieses in second array；
By continuous two periods than whether being greater than the 0.7 of the former period ratio and being less than the 1.3 of the former period ratio, as cycle of oscillation
Decision condition.
7. the method as described in claim 1, which is characterized in that described according to the zero passage rate determination condition, the deviation
Energy decision condition and the cycle of oscillation decision condition judge whether the thermoelectricity production process is system oscillation, comprising:
If the thermoelectricity production process meets the zero passage rate determination condition, the drift energy decision condition and the vibration
At least two condition in period decision condition is swung, determines that the thermoelectricity production process is system oscillation.
8. a kind of oscillation identification device of thermoelectricity production process, which is characterized in that described device includes:
First obtains unit, the first obtains unit, which is used to obtain in thermoelectricity production process, is judged to quantitative；
Second obtaining unit, second obtaining unit obtain deviation for being judged to quantitative according to；
First filter unit, first filter unit are used to be judged to quantitatively be filtered to described according to the deviation
Third obtaining unit, the third obtaining unit are used to obtain zero passage rate determination condition according to the deviation；
4th obtaining unit, the 4th obtaining unit is for obtaining drift energy decision condition；
5th obtaining unit, the 5th obtaining unit is for obtaining cycle of oscillation decision condition；
First judging unit, first judging unit according to the zero passage rate determination condition, the drift energy for sentencing
Fixed condition and the cycle of oscillation decision condition judge whether the thermoelectricity production process is system oscillation.
9. a kind of oscillation identification device of thermoelectricity production process, including memory, processor and storage are on a memory and can be
The computer program run on processor, which is characterized in that the processor performs the steps of when executing described program
It obtains in thermoelectricity production process and is judged to quantitative；
It is judged to quantitative according to described, obtains deviation；
According to the deviation, it is judged to quantitatively be filtered to described；
According to the deviation, zero passage rate determination condition is obtained；
Obtain drift energy decision condition；
Obtain cycle of oscillation decision condition；
According to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation decision condition, judgement
Whether the thermoelectricity production process is system oscillation.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
It is performed the steps of when execution
It obtains in thermoelectricity production process and is judged to quantitative；
It is judged to quantitative according to described, obtains deviation；
According to the deviation, it is judged to quantitatively be filtered to described；
According to the deviation, zero passage rate determination condition is obtained；
Obtain drift energy decision condition；
Obtain cycle of oscillation decision condition；
According to the zero passage rate determination condition, the drift energy decision condition and the cycle of oscillation decision condition, judgement
Whether the thermoelectricity production process is system oscillation.
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02273001A (en) * | 1989-04-12 | 1990-11-07 | Toshiba Corp | Service interruption detector of power converter |
| CN101236166A (en) * | 2008-02-19 | 2008-08-06 | 丁五行 | Chilled-mirror type dew point instrument control method |
| JP2009077589A (en) * | 2007-09-21 | 2009-04-09 | Tokyo Electric Power Co Inc:The | Apparatus for observing power fluctuation mode |
| CN102055201A (en) * | 2010-12-09 | 2011-05-11 | 北京四方继保自动化股份有限公司 | Power system low-frequency oscillation mechanism analysis method based on micro-disturbance signal oscillation mode recognition |
| CN102914718A (en) * | 2012-11-13 | 2013-02-06 | 山东大学 | Low frequency oscillation distinguishing method based on response ingredient and oscillation characteristic identification |
| CN103178535A (en) * | 2013-02-27 | 2013-06-26 | 中国电力科学研究院 | Online prevention and control method for low-frequency oscillation of electric power system on basis of two types of mechanisms |
| CN103178519A (en) * | 2013-03-06 | 2013-06-26 | 中国南方电网有限责任公司 | Method, for positioning power system power oscillation disturbance source in real time, based on SCADA (supervisory control and data acquisition) data |
| CN104101805A (en) * | 2014-07-15 | 2014-10-15 | 四川大学 | Excitation system negative damping detection method based on oscillation energy injection |
| CN104134993A (en) * | 2014-07-04 | 2014-11-05 | 国家电网公司 | Monitoring method and system of power system oscillation under time lag and loss of wide area measurement data |
| CN104184157A (en) * | 2014-08-01 | 2014-12-03 | 四川大学 | On-line low-frequency oscillation rapid determination method based on waveform tracking |
| CN104217112A (en) * | 2014-09-02 | 2014-12-17 | 南京工程学院 | Multi-type signal-based power system low-frequency oscillation analysis method |
| CN104330667A (en) * | 2014-10-29 | 2015-02-04 | 华中电网有限公司 | Monitoring method for determining influence of speed regulating system on low-frequency oscillation damping |
| CN105606895A (en) * | 2016-01-07 | 2016-05-25 | 国家电网公司 | On-line detection and filtering methods for sub-synchronous oscillation part of power system |
| US20160308516A1 (en) * | 2015-04-20 | 2016-10-20 | Texas Instruments Incorporated | Frequency detector and oscillator circuit |
| CN106599526A (en) * | 2017-02-17 | 2017-04-26 | 华北电力大学（保定） | Impedance analyzing method for sub-synchronous oscillation of thermal power unit |
| CN108053054A (en) * | 2017-11-22 | 2018-05-18 | 中国农业大学 | A kind of water quality prediction of river method |
| CN109787250A (en) * | 2018-12-30 | 2019-05-21 | 国网辽宁省电力有限公司电力科学研究院 | A kind of low-frequency oscillation of electric power system pattern identification method based on polynary empirical mode decomposition |
| CN109830972A (en) * | 2019-02-15 | 2019-05-31 | 湖南大学 | A kind of new energy station oscillation source system for rapidly identifying and method |
-
2019
- 2019-06-28 CN CN201910573777.XA patent/CN110488792B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02273001A (en) * | 1989-04-12 | 1990-11-07 | Toshiba Corp | Service interruption detector of power converter |
| JP2009077589A (en) * | 2007-09-21 | 2009-04-09 | Tokyo Electric Power Co Inc:The | Apparatus for observing power fluctuation mode |
| CN101236166A (en) * | 2008-02-19 | 2008-08-06 | 丁五行 | Chilled-mirror type dew point instrument control method |
| CN102055201A (en) * | 2010-12-09 | 2011-05-11 | 北京四方继保自动化股份有限公司 | Power system low-frequency oscillation mechanism analysis method based on micro-disturbance signal oscillation mode recognition |
| CN102914718A (en) * | 2012-11-13 | 2013-02-06 | 山东大学 | Low frequency oscillation distinguishing method based on response ingredient and oscillation characteristic identification |
| CN103178535A (en) * | 2013-02-27 | 2013-06-26 | 中国电力科学研究院 | Online prevention and control method for low-frequency oscillation of electric power system on basis of two types of mechanisms |
| CN103178519A (en) * | 2013-03-06 | 2013-06-26 | 中国南方电网有限责任公司 | Method, for positioning power system power oscillation disturbance source in real time, based on SCADA (supervisory control and data acquisition) data |
| CN104134993A (en) * | 2014-07-04 | 2014-11-05 | 国家电网公司 | Monitoring method and system of power system oscillation under time lag and loss of wide area measurement data |
| CN104101805A (en) * | 2014-07-15 | 2014-10-15 | 四川大学 | Excitation system negative damping detection method based on oscillation energy injection |
| CN104184157A (en) * | 2014-08-01 | 2014-12-03 | 四川大学 | On-line low-frequency oscillation rapid determination method based on waveform tracking |
| CN104217112A (en) * | 2014-09-02 | 2014-12-17 | 南京工程学院 | Multi-type signal-based power system low-frequency oscillation analysis method |
| CN104330667A (en) * | 2014-10-29 | 2015-02-04 | 华中电网有限公司 | Monitoring method for determining influence of speed regulating system on low-frequency oscillation damping |
| US20160308516A1 (en) * | 2015-04-20 | 2016-10-20 | Texas Instruments Incorporated | Frequency detector and oscillator circuit |
| CN105606895A (en) * | 2016-01-07 | 2016-05-25 | 国家电网公司 | On-line detection and filtering methods for sub-synchronous oscillation part of power system |
| CN106599526A (en) * | 2017-02-17 | 2017-04-26 | 华北电力大学（保定） | Impedance analyzing method for sub-synchronous oscillation of thermal power unit |
| CN108053054A (en) * | 2017-11-22 | 2018-05-18 | 中国农业大学 | A kind of water quality prediction of river method |
| CN109787250A (en) * | 2018-12-30 | 2019-05-21 | 国网辽宁省电力有限公司电力科学研究院 | A kind of low-frequency oscillation of electric power system pattern identification method based on polynary empirical mode decomposition |
| CN109830972A (en) * | 2019-02-15 | 2019-05-31 | 湖南大学 | A kind of new energy station oscillation source system for rapidly identifying and method |
Non-Patent Citations (4)
| Title |
|---|
| GOPAL GAJJAR: ""Power System Oscillation Modes Identifications From Wide Area Frequency Measurement System"", 《2012 IEEE INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY (POWERCON)》 * |
| 刘晓菊: "电力系统低频振荡在线辨识算法研究", 《通信电源技术》 * |
| 史坤鹏: ""基于信号能量分析的电力系统低频振荡模式识别"", 《万方学位论文库》 * |
| 周榆晓: "电力系统振荡中心的特性与识别", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
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